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Cheap flights from Sioux Falls to London from £249

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LON
20 Jun — 27 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sioux Falls to London

Enter your travel dates to find the best prices.

Cheapest flights from Sioux Falls to London
Explore the most affordable flight options available from Sioux Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 May 2026.

Tue 15/907:19
FSD
-
LHR
1 stop18h 21m
Iberia
Tue 22/907:50
LHR
-
FSD
2 stops22h 01m
Iberia
Deal found 16/5£651
Tue 3/1115:16
FSD
-
LHR
1 stop10h 39m
United Airlines
Wed 18/1106:50
LHR
-
FSD
2 stops16h 44m
United Airlines
Deal found 21/5£668
Tue 3/1110:59
FSD
-
LHR
1 stop13h 56m
Multiple Airlines
Wed 18/1111:00
LHR
-
FSD
1 stop18h 59m
Multiple Airlines
Deal found 21/5£669
Wed 4/1113:00
FSD
-
LHR
2 stops15h 30m
Multiple Airlines
Wed 11/1108:40
LHR
-
FSD
2 stops17h 04m
Multiple Airlines
Deal found 21/5£672
Wed 4/1110:58
FSD
-
LHR
1 stop14h 07m
KLM
Wed 11/1106:30
LHR
-
FSD
2 stops15h 20m
KLM
Deal found 20/5£674
Tue 15/912:30
FSD
-
LHR
1 stop16h 45m
Multiple Airlines
Tue 22/913:10
LHR
-
FSD
1 stop16h 41m
Multiple Airlines
Deal found 16/5£675
Sat 12/918:41
FSD
-
LHR
2 stops29h 49m
United Airlines
Tue 22/906:50
LHR
-
FSD
2 stops22h 02m
United Airlines
Deal found 20/5£676
Wed 4/1113:45
FSD
-
LHR
2 stops15h 05m
United Airlines
Wed 11/1106:50
LHR
-
FSD
2 stops16h 44m
United Airlines
Deal found 20/5£677
Tue 15/913:20
FSD
-
LHR
2 stops17h 55m
Delta
Tue 22/906:30
LHR
-
FSD
2 stops21h 39m
Delta
Deal found 16/5£678
Sat 12/918:00
FSD
-
LHR
1 stop10h 50m
Iberia
Tue 22/907:50
LHR
-
FSD
2 stops22h 01m
Iberia
Deal found 19/5£687
Tue 3/1113:00
FSD
-
LCY
2 stops13h 50m
KLM
Wed 18/1109:20
LCY
-
FSD
2 stops16h 24m
KLM
Deal found 21/5£690
Wed 4/1113:00
FSD
-
LCY
2 stops13h 10m
KLM
Wed 11/1108:40
LCY
-
FSD
2 stops17h 04m
KLM
Deal found 20/5£696

Find flight deals from Sioux Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 May 2026.

Round-trip from

£651

One-way from

£249

Popular in

April

Cheapest in

September

Average price

£701
Iberia
  • Iberia
  • 15/9-22/9
  • 3 total stops
  • 40h 22m total
  • Sioux Falls to London
Search Deals
Iberia
  • Iberia
  • 5/10
  • 1 total stop
  • 10h 55m total
  • Sioux Falls to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£39 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sioux Falls to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 May 2026.
Use the filters below to find and compare flights from Sioux Falls to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 3/11

10:59-06:55

1 stop13h 56m

London Heathrow

Wed 18/11

11:00-23:59

1 stop18h 59m

£669

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 15/9

12:30-11:15

1 stop16h 45m

London Heathrow

Tue 22/9

13:10-23:51

1 stop16h 41m

£675

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 15/9

13:20-13:15

2 stops17h 55m

London Heathrow

Tue 22/9

06:30-22:09

2 stops21h 39m

£678

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Tue 3/11

13:00-08:50

2 stops13h 50m

London City

Wed 18/11

09:20-19:44

2 stops16h 24m

£690

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Wed 4/11

13:00-08:10

2 stops13h 10m

London City

Wed 11/11

08:40-19:44

2 stops17h 04m

£696

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sat 12/9

18:41-06:30

2 stops29h 49m

London Heathrow

Tue 22/9

06:50-22:52

2 stops22h 02m

£699

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Sat 12/9

13:20-13:15

2 stops17h 55m

London City

Tue 22/9

10:00-22:09

2 stops18h 09m

£758

Sioux FallsLondon

FSD - LCY

FSDLCY

Sioux Falls Joe Foss Field

Sat 12/9

18:41-17:55

2 stops17h 14m

London City

Tue 22/9

09:15-20:07

2 stops16h 52m

£797

Sioux FallsLondon

FSD - LGW

FSDLGW

Sioux Falls Joe Foss Field

Fri 3/7

09:54-10:00

2 stops42h 06m

London Gatwick

Wed 8/7

14:00-17:46

1 stop33h 46m

£805

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 8/7

08:23-06:20

2 stops15h 57m

London Heathrow

Fri 17/7

12:25-20:52

1 stop14h 27m

£828

Flights are sorted by cheapest return flights first.

Deals found on 17/5

Showing 1-10 of 34 resultsSorted by cheapest first
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Best time to book a flight from Sioux Falls to London

Have a flexible travel schedule? Discover the best time to fly to London from Sioux Falls with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux Falls to London

What is the cheapest month to book a flight from Sioux Falls to London?

Currently, July is the cheapest month in which you can book a flight from Sioux Falls to London (average of £381). Flying from Sioux Falls to London in June is currently the most expensive (average of £708). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Sioux Falls to London?

What’s the top stopover airport for flights from Sioux Falls to London?

Share of one-stop return flights from Sioux Falls to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Chicago (ORD) – chosen by Cheapflights users on 50% of one-stop itineraries from Sioux Falls to London on Cheapflights.

What’s the cheapest stopover airport for flights from Sioux Falls to London?

Average return fare for one-stop flights from Sioux Falls to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Minneapolis (MSP) is the most affordable one-stop option, with an average return flight price of £484.

What’s the fastest stopover option from Sioux Falls to London?

Shortest average travel time for one-stop one-way flights from Sioux Falls to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for one-stop routes: 10h 36m.

Which airport typically offers the quickest stopover for flights from Sioux Falls to London?

Average stopover duration for one-stop one-way flights from Sioux Falls to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 2h 12m.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sioux Falls to London?

    For a flight from Sioux Falls to London, you will be flying from Joe Foss Field. Sioux Falls Joe Foss Field (FSD) is just 2.6 mi from the center of the city. Joe Foss Field is the only Sioux Falls airport and it handles 0 outbound flights to London per day. 0 airlines have flights to London from Sioux Falls Joe Foss Field on a regular basis.

  • How long is the flight from Sioux Falls to London?

    For as low as £690, Delta can have you in London from Sioux Falls in 13h 50m. The distance from Sioux Falls to London is about 4205 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Sioux Falls to London?

    The most popular route from Sioux Falls to London is Sioux Falls Joe Foss Field - London Heathrow. You may also consider Sioux Falls Joe Foss Field - London City or Sioux Falls Joe Foss Field - London Gatwick.

  • Can I find deals for flights from Sioux Falls to London that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to London.

  • Can I find deals for business class flights from Sioux Falls to London?

    Yes. Cheapflights offers flight deals from Sioux Falls to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux Falls to London?

    Currently, July is the cheapest month in which you can book a flight from Sioux Falls to London (average of £381). Flying from Sioux Falls to London in June is currently the most expensive (average of £708). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Hounslow
Croydon
Wembley
Luton
Gatwick
Slough
Ilford
Hayes
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Watford
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Southend-on-Sea
Guildford
Southall
Chelmsford

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Alternative routes for Sioux Falls to London

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Heathrow flights
Rapid City to Heathrow flights
Sioux Falls to Gatwick flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Sioux Falls to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Sioux Falls today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Sioux Falls to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Sioux Falls to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Sioux Falls to London with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sioux Falls to London, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sioux Falls to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Sioux Falls today and book when prices fit your budget.

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